476SML025M Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 476SML025M is a 47 µF, 25 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the SML series. This surface mount radial can capacitor is designed for general purpose applications with a rated lifetime of 2000 hours at 85°C and an operating temperature range of -40°C to 85°C. The part is currently active in production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this capacitor category, ensuring direct functional replacement without circuit redesign.

Substiute Parts

476SML025M

Cornell Dubilier / Illinois CapacitorIn Stock: 769476SML025M Datasheet

Current PartRFQ

ATB476M025

Cornell Dubilier / Illinois CapacitorIn Stock: 33054ATB476M025 Datasheet

UpgradeRFQ

EDK476M025A9GAA

KEMETIn Stock: 1038EDK476M025A9GAA Datasheet

Parametric EquivalentRFQ

UWR1E470MCL1GB

NichiconIn Stock: 30525UWR1E470MCL1GB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 476SML025M are classified based on strict adherence to the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• Capacitance: 47 µF (exact match required)
• Voltage Rating: 25 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: Radial, Can - SMD (exact match required)
• Physical Dimensions: 0.248" Dia (6.30mm) and Height 0.217" (5.50mm) maximum (exact match required)
• Surface Mount Land Size: 0.260" L x 0.260" W (6.60mm x 6.60mm) (exact match required)

Secondary Compatibility Parameters:

• Operating Temperature Range: -40°C ~ 85°C minimum
• Ripple Current @ 120 Hz: 70 mA minimum
• Ripple Current @ 100 kHz: 87.5 mA minimum
• RoHS3 Compliance: Required
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts meeting all primary criteria are classified as direct equivalents. Parts with enhanced secondary parameters (higher ripple current capability, extended temperature range, or improved lifetime ratings) are classified as upgrades while maintaining full backward compatibility.

Parameter Comparison

Engineering Selection Recommendations

ATB476M025 (Upgrade Classification)

The ATB476M025 is classified as an upgrade substitute for the 476SML025M. This part maintains all primary electrical and mechanical compatibility parameters while providing enhanced performance characteristics. The ATB476M025 features reduced ESR (4.52 Ohm versus 5.644 Ohm), extended lifetime rating (3000 hours at 105°C versus 2000 hours at 85°C), and significantly higher ripple current capability (168 mA at 120 Hz and 240 mA at 100 kHz versus 70 mA and 105 mA respectively). The operating temperature range is extended to -55°C ~ 105°C. The ATB476M025 is RoHS3 compliant with MSL 1 rating and active product status. Physical dimensions are compatible with the exception of height (0.224" maximum versus 0.217" maximum) and surface mount land size width (0.280" versus 0.260"), which may require PCB layout verification. High inventory availability (33044 pieces) supports production requirements.

EDK476M025A9GAA (Parametric Equivalent Classification)

The EDK476M025A9GAA manufactured by KEMET is classified as a parametric equivalent substitute for the 476SML025M. This part maintains exact electrical specifications including 47 µF capacitance, 25 V voltage rating, ±20% tolerance, and identical operating temperature range (-40°C ~ 85°C). Lifetime rating matches at 2000 hours at 85°C. Ripple current specifications are compatible (70 mA at 120 Hz and 87.5 mA at 10 kHz). Physical dimensions and surface mount land size are identical. The EDK476M025A9GAA is RoHS3 compliant with MSL 1 rating and active product status. Packaging is supplied in Tape & Reel format. Inventory availability is adequate (974 pieces).

UWR1E470MCL1GB (Parametric Equivalent Classification - Obsolete Status)

The UWR1E470MCL1GB manufactured by Nichicon is classified as a parametric equivalent substitute for the 476SML025M with the critical limitation of obsolete product status. This part maintains exact electrical specifications including 47 µF capacitance, 25 V voltage rating, ±20% tolerance, and identical operating temperature range (-40°C ~ 85°C). Lifetime rating matches at 2000 hours at 85°C. Ripple current specifications are compatible (70 mA at 120 Hz and 105 mA at 10 kHz). Physical dimensions and surface mount land size are identical. The UWR1E470MCL1GB is RoHS3 compliant with MSL 1 rating. Packaging is supplied in Cut Tape and Digi-Reel format. Although inventory availability is high (30450 pieces), the obsolete product status indicates this part is no longer in active production and should be considered only for legacy system support or when existing stock is available.

Selection Criteria Summary:

For new designs and active production: Select ATB476M025 for enhanced performance or EDK476M025A9GAA for direct parametric equivalence.

For legacy system support or inventory management: UWR1E470MCL1GB is available but subject to obsolescence constraints.

All substitute parts maintain RoHS3 compliance and MSL 1 rating, ensuring compatibility with standard surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q1: Can the ATB476M025 be used as a direct replacement for the 476SML025M in existing designs?

A: The ATB476M025 is electrically compatible as an upgrade substitute. However, physical dimension differences require PCB layout verification. The ATB476M025 has a maximum height of 0.224" (5.70mm) compared to 0.217" (5.50mm) for the 476SML025M, and the surface mount land size width is 0.280" (7.10mm) versus 0.260" (6.60mm). These differences may affect PCB routing and component placement in space-constrained layouts. Verify clearance before implementation.

Q2: What is the difference between the EDK476M025A9GAA and UWR1E470MCL1GB substitutes?

A: Both parts are parametric equivalents with identical electrical specifications and physical dimensions. The primary difference is product status: EDK476M025A9GAA is active in production, while UWR1E470MCL1GB is obsolete. For new designs, EDK476M025A9GAA is the recommended choice. UWR1E470MCL1GB should be used only when existing inventory is available or for legacy system maintenance.

Q3: Are all substitute parts RoHS3 compliant?

A: Yes. The 476SML025M and all three substitute parts (ATB476M025, EDK476M025A9GAA, and UWR1E470MCL1GB) are RoHS3 compliant with MSL 1 (unlimited moisture sensitivity level), ensuring compatibility with standard surface mount assembly and environmental regulations.

Q4: What does the ±20% tolerance specification mean for capacitance?

A: The ±20% tolerance indicates that the actual capacitance value may vary between 37.6 µF and 56.4 µF (47 µF ± 20%). All substitute parts maintain this identical tolerance specification, ensuring equivalent performance in circuits where this tolerance range is acceptable.

Q5: How do ripple current ratings affect component selection?

A: Ripple current rating indicates the maximum AC current the capacitor can handle at specified frequencies without exceeding temperature limits. The 476SML025M is rated for 70 mA at 120 Hz and 105 mA at 100 kHz. The ATB476M025 upgrade provides significantly higher ripple current capability (168 mA at 120 Hz and 240 mA at 100 kHz), making it suitable for higher-stress applications. EDK476M025A9GAA and UWR1E470MCL1GB maintain equivalent ripple current ratings to the main part.

Q6: What is ESR and why does it matter?

A: Equivalent Series Resistance (ESR) represents the internal resistance of the capacitor at a specified frequency. Lower ESR values indicate better performance, particularly in high-frequency applications and power delivery circuits. The 476SML025M has ESR of 5.644 Ohm at 120 Hz, while the ATB476M025 upgrade features lower ESR of 4.52 Ohm at 120 Hz. ESR values for EDK476M025A9GAA and UWR1E470MCL1GB are not specified in the provided data.

Q7: Can these capacitors be used in applications beyond general purpose?

A: The 476SML025M is specified for general purpose applications. The ATB476M025 is rated for bypass and decoupling applications, indicating suitability for higher-performance power delivery and signal conditioning circuits. All parts maintain the same 25 V voltage rating and 47 µF capacitance, but application suitability depends on ripple current requirements and thermal constraints specific to each circuit design.

Q8: What is the significance of the 2000 hours at 85°C lifetime rating?

A: This specification indicates the capacitor's expected operational life under continuous operation at 85°C ambient temperature with rated voltage and ripple current applied. The 476SML025M, EDK476M025A9GAA, and UWR1E470MCL1GB all share this 2000-hour rating at 85°C. The ATB476M025 upgrade provides extended lifetime of 3000 hours at the higher temperature of 105°C, indicating superior thermal stability and longer service life in demanding applications.

Q9: Are there packaging format differences between substitute parts?

A: Yes. The 476SML025M packaging format is not specified. The ATB476M025 is supplied in Bulk packaging. The EDK476M025A9GAA is supplied in Tape & Reel (TR) format. The UWR1E470MCL1GB is supplied in Cut Tape (CT) and Digi-Reel format. Packaging format affects handling, storage, and automated assembly processes. Verify packaging compatibility with your procurement and assembly requirements.

Q10: Why is the UWR1E470MCL1GB marked as obsolete if it has high inventory?

A: Obsolete product status indicates the manufacturer has discontinued active production and support for this part. High current inventory reflects existing stock from previous production runs. Obsolete parts carry risk of supply discontinuation once existing inventory is depleted. For new designs, active-status alternatives (ATB476M025 or EDK476M025A9GAA) are recommended to ensure long-term supply chain stability.